Still some single letter programming language name left according to this blog post: http://iron9light.wordpress.com/2009/12/16/single-letter-programming-langag

Still some single letter programming language name left according to this blog post: http://iron9light.wordpress.com/2009/12/16/single-letter-programming-langage-a-z/ http://iron9light.wordpress.com/2009/12/16/single-letter-pro... . However the post is a little old, so it may have changed.